[Bug tree-optimization/34683] SSA rewriting in the loop unroller causes quadratic behavior

2008-01-11 Thread rguenth at gcc dot gnu dot org
--- Comment #47 from rguenth at gcc dot gnu dot org 2008-01-11 13:29 --- Most of the PRE/FRE memory is spent in copied VOPs VECs. Unfortunately we cannot move them to heap memory easily as the get shared in the PRE tables... I tried to be explicit in managing the memory, but it gets

[Bug tree-optimization/34683] SSA rewriting in the loop unroller causes quadratic behavior

2008-01-11 Thread rakdver at gcc dot gnu dot org
--- Comment #48 from rakdver at gcc dot gnu dot org 2008-01-12 03:59 --- (In reply to comment #47) Most of the PRE/FRE memory is spent in copied VOPs VECs. Unfortunately we cannot move them to heap memory easily as the get shared in the PRE tables... I tried to be explicit in

[Bug tree-optimization/34683] SSA rewriting in the loop unroller causes quadratic behavior

2008-01-10 Thread rguenth at gcc dot gnu dot org
--- Comment #43 from rguenth at gcc dot gnu dot org 2008-01-10 17:05 --- Actually this is not a regression against a released compiler, as both the 4.1 and the 4.2 branches ICE for this testcase: gfortran-4.2 -S -o /dev/null t.f90 -O -fstrict-aliasing t.f90: In function 'ampli':

[Bug tree-optimization/34683] SSA rewriting in the loop unroller causes quadratic behavior

2008-01-10 Thread steven at gcc dot gnu dot org
--- Comment #44 from steven at gcc dot gnu dot org 2008-01-10 17:39 --- Yes, fixed. -- steven at gcc dot gnu dot org changed: What|Removed |Added Status|NEW

[Bug tree-optimization/34683] SSA rewriting in the loop unroller causes quadratic behavior

2008-01-10 Thread jaydub66 at gmail dot com
--- Comment #45 from jaydub66 at gmail dot com 2008-01-10 20:14 --- (In reply to comment #42) This is probably all we can get for now - maybe another few % with minor tweaks, but nothing earth-shattering. After all, we _do_ have a much larger IL due to the number of VOPs not

[Bug tree-optimization/34683] SSA rewriting in the loop unroller causes quadratic behavior

2008-01-10 Thread steven at gcc dot gnu dot org
--- Comment #46 from steven at gcc dot gnu dot org 2008-01-10 20:21 --- See e.g. bug 27004 and bug 33974. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34683